Monitor



FIG. 1 is a front perspective view of a monitor, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a back perspective view thereof; and,

FIG. 9 is a bottom perspective view thereof.

The broken lines shown in the figures depict portions of the monitor and forms no part of the claimed design. 

CLAIM The ornamental design for a monitor, as shown and described. 